28036520 has 32 divisors (see below), whose sum is σ = 63590400. Its totient is φ = 11124288.

The previous prime is 28036501. The next prime is 28036529. The reversal of 28036520 is 2563082.

It is a self number, because there is not a number n which added to its sum of digits gives 28036520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28036529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321 + ... + 7839.

It is an arithmetic number, because the mean of its divisors is an integer number (1987200).

Almost surely, 2^28036520 is an apocalyptic number.

28036520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28036520 is an abundant number, since it is smaller than the sum of its proper divisors (35553880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28036520 is a wasteful number, since it uses less digits than its factorization.

28036520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5657 (or 5653 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 28036520 is about 5294.9523132886. The cubic root of 28036520 is about 303.7908591527.

The spelling of 28036520 in words is "twenty-eight million, thirty-six thousand, five hundred twenty".